My company uses the first name last name field on the Exchange server for hte first name and last name. Unfortunately email accounts for services for instances uses the First Name Last Name of the person responsible for the service. I cannot change it.

As result when we do a lookup of a user who have such accounts we end up with as many results as accounts this person has. Also, since by default the lookup presents First Name Last Name, we have to open each one of then to realize which is the right one to send a mail to.

We have leave the PIM field mapping empty for first name and last name. I showed then the Display name on the Exchange, which is perfect, the drawback is that a new entry on the address book appears as the email address and doesn't have a First name last name. I decided that it is worse than the first scenario and change to the first situation.

Do you have any other idea where I could solve the lookup issue without affect the address book ?